Context Management

From Martin Heinz

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Some Cools Things contextlib Can Do

1. Trigger an object to close with contextlib.closing
2. Suppress warnings with contextlib.suppress. Equivalent to:

try:
	  do_something()
except RuntimeError:
    pass

3. Add __enter__ and __exit__ functionality to functions via the contextlib.ContextDecorator mixin / decorator

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There Are Three Types of Context Managers

1. Single-use
2. Reusable
3. Reentrant—Reusable, and can be nested 🤯